CN203412837U - Overflow device of one-rod maneuvering valve - Google Patents
Overflow device of one-rod maneuvering valve Download PDFInfo
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- CN203412837U CN203412837U CN201320473168.5U CN201320473168U CN203412837U CN 203412837 U CN203412837 U CN 203412837U CN 201320473168 U CN201320473168 U CN 201320473168U CN 203412837 U CN203412837 U CN 203412837U
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Abstract
The utility model provides an overflow device of a one-rod maneuvering valve, belonging to the technical field of agricultural mechanical equipment and solving the problem that abnormal sound can be generated in a safe pressure relief device of an existing one-rod maneuvering valve. The overflow device of the one-rod maneuvering valve is characterized in that a pressure relief channel communicated with a fuel tank is arranged on a valve body, the pressure relief channel is communicated with a fuel outlet channel, a safety cavity is arranged on the pressure relief channel, a core bar that enables the pressure relief channel to communicate with the fuel outlet channel when the fuel hydraulic pressure of the fuel outlet channel achieves a set value is arranged on the safety cavity, one end of the core bar abuts against the peripheral wall of the opening of the fuel outlet channel, and the other end of the core bar elastically abuts against the inner wall of the valve body. The overflow device of the one-rod maneuvering valve has a simple structure, and the characteristic that when the one-rod maneuvering valve begins to work, abnormal sound cannot be generated between the core bar as well as a spring and the wall of the valve body regardless of use at high pressure state or low pressure state is achieved.
Description
Technical field
The utility model belongs to agricultural machinery equipment technical field, relates to a kind of overflow mechanism of a lever operation valve.
Background technique
Grain combine is called for short combine-harvester, gathers in exactly the combination machine of crops, is harvesting, threshing, the separated cane that can once complete cereal crops, removes the operations such as assorted excess, directly obtains the harvest machinery of grain from field.
Before combine-harvester does not occur; threshing machine and these apparatuses of mechanical harvesting machine; agricultural productivity while greatly improving for 19th century; this makes to use and than few in the past workman, removes to gather in more cereal and become possibility, but an invention of 19 th century later has further improved this efficiency; combine-harvester is combined in one whole harvesting and threshing machine; make peasant go harvesting and threshing with single operation, thereby saved manpower and materials, greatly alleviated peasant's burden.
Combine-harvester is that in farm machinery, structure is the most complicated, scientific and technological content is higher, and manufacturing technology level requires very tight product.In combine-harvester, generally all by a bar driven valve, control the cutting of combine-harvester, threshing, separated, the running of the operation mechanisms such as unloading, in an existing bar driven valve safe pressure relief device, generally comprise on a bar driven valve valve body and offer pressure release passage, on pressure release passage, be provided with split type spool one and spool two, described spool one abuts against the oil outlet place of pressure release passage, spool two is positioned on the spring seat of valve interior wall, between valve body one and valve body two, be provided with the spring that energy spool one abuts against the oil outlet place of above-mentioned pressure release passage under certain pressure.In above-mentioned structure, when a lever operation valve is started working, working oil path oils and presses liter, spool one when oil pressure rises to certain force value in safe pressure relief device is backed down by oil pressure, the impact force of the fluid in an instant that spool one is backed down is very large, and fluid flowing instability must cause the spring in safe pressure relief device to produce and swing in inside, when this spring swings, can collide with valve body wall, produce abnormal sound.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of no matter a lever operation valve, under high pressure or low-pressure state use, can not produce the overflow mechanism of a kind of lever operation valve of abnormal sound.
The purpose of this utility model can realize by following technical proposal: a kind of overflow mechanism of a lever operation valve, this lever operation valve comprises valve body and is opened in oil inlet passage and the oil discharge passage on valve body, on valve body, be provided with the valve rod that makes above-mentioned oil inlet passage and oil discharge passage be communicated with or block, described valve rod relative valve body on valve body is done axial sliding movement, it is characterized in that, this overflow mechanism is included in and on valve body, also offers a pressure release passage being connected with fuel tank, described pressure release passage and oil discharge passage are connected, on described pressure release passage, offer safe chamber, on safe chamber, be provided with and reach the core bar that a setting value makes above-mentioned pressure release passage be connected with oil discharge passage when oil discharge passage oil liquid pressure, one end of this core bar is resisted against on above-mentioned oil discharge passage road junction perisporium, flexible being resisted against on above-mentioned valve interior wall of the other end of this core bar.
The overflow mechanism of this lever operation valve is mainly that the core bar of integral type is set between oil discharge passage and pressure release passage, spring housing is located on core bar, when a lever operation valve is started working, working oil path oils and presses liter, when oil pressure rises to certain force value, core bar is backed down by oil pressure, core bar of the present utility model is the impact that is axially subject to fluid, the impact force of the fluid in an instant that core bar is backed down is large again, fluid flows and unstablely more also can not impact spring of the present utility model, can not make spring and valve interior wall touch mutually generation abnormal sound.
In the overflow mechanism of an above-mentioned a kind of lever operation valve, described core bar comprises a cylindric body of rod and is connected in the coniform working end of cylindric body of rod one end, described coniform working end part tapered portion puts in above-mentioned oil discharge passage and the conical surface shutoff of this coniform working end is located at above-mentioned oil discharge passage road junction, and the other end that is arranged with spring and this spring on the described cylindric body of rod is resisted against on above-mentioned valve interior wall.One end of this core bar is arranged to coniform working end and is also had when core bar is backed down by oil pressure, and fluid can impact along with the shunting of coniform working end, alleviates the effect of fluid to the impact force of core bar.
In the overflow mechanism of an above-mentioned a kind of lever operation valve, hold-doun nut plug on the valve body wall relative with the above-mentioned cylindric body of rod, on the inwall of described nut plug, offer spring seat, in spring seat bottom, offer the blind hole matching with above-mentioned core bar, what the other end of above-mentioned spring was resisted against on described spring seat and the other end of this core bar slides is plugged in blind hole.Core bar is located in blind hole, further core bar is positioned, and prevents that core bar from producing double swerve and producing abnormal sound under the impact of fluid.
In the overflow mechanism of an above-mentioned a kind of lever operation valve, between the described cylindric body of rod and blind hole, be provided with the annular rubber ring that the above-mentioned cylindric body of rod is played to guiding axial motion.The object arranging is like this to make core bar when doing along its axial motion, and annular rubber ring has does an axial leading role to core bar, also has the effect of core bar being played to buffering, prevents that between core bar and blind hole, producing touching sends abnormal sound.
In the overflow mechanism of an above-mentioned a kind of lever operation valve, in blind hole port wall, offer annular table component level, above-mentioned annular rubber ring is fixed in described annular table component level.Being fixed in above-mentioned annular table component level of this annular rubber ring interference.
In the overflow mechanism of an above-mentioned a kind of lever operation valve, described nut plug is threaded connection on above-mentioned valve body wall, between this nut plug and valve body wall, is provided with ring washer.
Compared with prior art, the overflow mechanism of this lever operation valve is provided with and reaches the core bar that a setting value makes above-mentioned pressure release passage be connected with oil discharge passage when oil discharge passage oil liquid pressure on safe chamber, core bar is integrally manufactured, under the impact of fluid, be difficult for rocking with valve body wall and produce abnormal sound, this spring is socketed on above-mentioned core bar, under the location of core bar, this spring can not produce to rock with valve body wall yet touches generation abnormal sound mutually, the utility model is simple in structure, solved when a lever operation valve is started working, no matter use under high pressure or low-pressure state, core bar and spring can not produce with valve body wall the feature of abnormal sound.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of this lever operation valve.
In figure, 1, valve body; 2, oil inlet passage; 3, oil discharge passage; 4, valve rod; 5, pressure release passage; 6, safe chamber; 7, core bar; 7a, the cylindric body of rod; 7b, coniform working end; 8, spring; 9, nut plug; 10, spring seat; 11, blind hole; 12, annular rubber ring; 13, ring washer.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, the overflow mechanism of this lever operation valve, this lever operation valve is mainly comprised of valve body 1, on valve body 1, offer oil inlet passage 2 and oil discharge passage 3, on valve body 1, be provided with valve rod 4, when this valve rod 4 is worked on valve body 1, valve rod 4 relative valve body 1 on valve body 1 is done axial sliding movement, this valve rod 4 can make oil inlet passage 2 and oil discharge passage 3, and both are connected or both are blocked mutually, this overflow mechanism is included in and on valve body 1, also offers a pressure release passage being connected with fuel tank 5, pressure release passage 5 and oil discharge passage 3 are connected, on pressure release passage 5, offer safe chamber 6, on safe chamber 6, be provided with and reach the core bar 7 that a setting value makes above-mentioned pressure release passage 5 be connected with oil discharge passage 3 when oil discharge passage 3 oil liquid pressures, one end of this core bar 7 is resisted against on above-mentioned oil discharge passage 3 road junction perisporiums, flexible being resisted against on above-mentioned valve body 1 inwall of the other end of this core bar 7.When Practical manufacturing, this core bar 7 is mainly comprised of a cylindric body of rod 7a and the coniform working end 7b that is connected in cylindric body of rod 7a one end, this coniform working end 7b part tapered portion puts in oil discharge passage 3 and the conical surface shutoff of this coniform working end 7b is located at above-mentioned oil discharge passage 3 road junctions, and the other end that is arranged with spring 8 and this spring 8 on cylindric body of rod 7a is resisted against on above-mentioned valve body 1 inwall; One end of this core bar 7 is arranged to coniform working end 7b and is also had when core bar 7 is backed down by oil pressure, and fluid can impact along with coniform working end 7b shunting, alleviates the effect of fluid to the impact force of core bar 7; Hold-doun nut plug 9 on valve body 1 wall relative with above-mentioned cylindric body of rod 7a, nut plug 9 is threaded connection on above-mentioned valve body 1 wall, between this nut plug 9 and valve body 1 wall, be provided with ring washer 13, on the inwall of this nut plug 9, offer spring seat 10, in spring seat 10 bottoms, offer the blind hole 11 matching with above-mentioned core bar 7, what the other end of spring 8 was resisted against on described spring seat 10 and the other end of this core bar 7 slides is plugged in blind hole 11; Core bar 7 is located in blind hole 11, further core bar 7 is positioned, and prevents that core bar 7 from producing double swerve and producing abnormal sound under the impact of fluid.When Practical manufacturing, between this cylindric body of rod 7a and blind hole 11, be provided with the annular rubber ring 12 that cylindric body of rod 7a is played to guiding axial motion.When practical application, the concrete linkage structure between this annular rubber ring 12 and blind hole 11 is: in blind hole 11 port wall, offer annular table component level, annular rubber ring 12 is fixed in described annular table component level.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used herein: valve body 1; Oil inlet passage 2; Oil discharge passage 3; Valve rod 4; Pressure release passage 5; Safe chamber 6; Core bar 7; Cylindric body of rod 7a; Coniform working end 7b; Spring 8; Nut plug 9; Spring seat 10; Blind hole 11; Annular rubber ring 12; Ring washer 13 terms such as grade, but do not get rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (6)
1. the overflow mechanism of a lever operation valve, this lever operation valve comprises valve body (1) and is opened in oil inlet passage (2) and the oil discharge passage (3) on valve body (1), on valve body (1), be provided with the valve rod (4) that makes above-mentioned oil inlet passage (2) and oil discharge passage (3) be communicated with or block, described valve rod (4) is done axial sliding movement at the upper relative valve body (1) of valve body (1), it is characterized in that, this overflow mechanism is included in and on valve body (1), also offers a pressure release passage being connected with fuel tank (5), described pressure release passage (5) and oil discharge passage (3) are connected, on described pressure release passage (5), offer safe chamber (6), on safe chamber (6), be provided with and reach the core bar (7) that a setting value makes above-mentioned pressure release passage (5) be connected with oil discharge passage (3) when oil discharge passage (3) oil liquid pressure, one end of this core bar (7) is resisted against on the perisporium of above-mentioned oil discharge passage (3) road junction, flexible being resisted against on above-mentioned valve body (1) inwall of the other end of this core bar (7).
2. the overflow mechanism of an a kind of lever operation valve according to claim 1, it is characterized in that, described core bar (7) comprises a cylindric body of rod (7a) and is connected in the coniform working end (7b) of the cylindric body of rod (7a) one end, described coniform working end (7b) part tapered portion puts in above-mentioned oil discharge passage (3) and the conical surface shutoff of this coniform working end (7b) is located at above-mentioned oil discharge passage (3) road junction, the other end that is arranged with spring (8) and this spring (8) on the described cylindric body of rod (7a) is resisted against on above-mentioned valve body (1) inwall.
3. the overflow mechanism of an a kind of lever operation valve according to claim 2, it is characterized in that, hold-doun nut plug (9) on valve body (1) wall relative with the above-mentioned cylindric body of rod (7a), on the inwall of described nut plug (9), offer spring seat (10), in spring seat (10) bottom, offer the blind hole (11) matching with above-mentioned core bar (7), what the other end of above-mentioned spring (8) was resisted against described spring seat (10) above and the other end of this core bar (7) slides is plugged in blind hole (11).
4. the overflow mechanism of an a kind of lever operation valve according to claim 3, is characterized in that, is provided with the annular rubber ring (12) that the above-mentioned cylindric body of rod (7a) is played to guiding axial motion between the described cylindric body of rod (7a) and blind hole (11).
5. the overflow mechanism of an a kind of lever operation valve according to claim 4, is characterized in that, in blind hole (11) port wall, offers annular table component level, and above-mentioned annular rubber ring (12) is fixed in described annular table component level.
6. the overflow mechanism of an a kind of lever operation valve according to claim 3, it is characterized in that, described nut plug (9) is threaded connection on above-mentioned valve body (1) wall, between this nut plug (9) and valve body (1) wall, is provided with ring washer (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320473168.5U CN203412837U (en) | 2013-08-05 | 2013-08-05 | Overflow device of one-rod maneuvering valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320473168.5U CN203412837U (en) | 2013-08-05 | 2013-08-05 | Overflow device of one-rod maneuvering valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203412837U true CN203412837U (en) | 2014-01-29 |
Family
ID=49975726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320473168.5U Expired - Fee Related CN203412837U (en) | 2013-08-05 | 2013-08-05 | Overflow device of one-rod maneuvering valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203412837U (en) |
-
2013
- 2013-08-05 CN CN201320473168.5U patent/CN203412837U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20190805 |
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| CF01 | Termination of patent right due to non-payment of annual fee |